Not enough information. Tactics depend on various factors: (1) the venue, since auction formats differ greatly across domain market places; (2) which of various auction types at a given website you're looking at; (3) listing settings decided by the seller such as "buy now" options or a minimu...
"What type of car should I buy?" As you can imagine, the answer to this question is highly dependent upon a number of factors. Similarly, you're asking some very specific questions. I anticipate that a number of experts here would love to help you with answering with specific questions -- but t...